Of course, blockchainchain can be used in Healthcare. I've even seen several ICOs from this industry. I think such ICO will continue to appear. I participated in ICO WELL. WELL Token already received.
An ICO in the healthcare sector makes no sense to me. If there
was a really good project, they would simply approach a hospital or insurance company who, upon seeing how good this project is and how much money it could save them, would fund it. Why would they need a tradable token to put patient records on a blockchain, unless it's just to make them a quick buck before they disappear.